Open to opportunities

John Kimeu

@johnkimeu

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Healthcare AI evaluation and clinical data annotation specialist improving LLM accuracy.

Kenya

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What I'm looking for

I’m looking for remote, healthcare-focused AI evaluation work where I can apply my clinical nursing expertise, ensure medical accuracy, reduce hallucinations, and partner with engineering/QA to improve LLM performance.

I’m a results-driven HealthcareAI Evaluation Specialist & Clinical DataAnnotator with 4+ years of remote experience optimizing Large Language Models (LLMs) through RLHF and prompt engineering. I evaluate and rate 500+ AI-generated responses weekly for medical accuracy, factual correctness, and alignment with human preference guidelines.

I bring real-world clinical depth from 4 years of nursing experience at Nakuru Level 5 Hospital and recent tenure as a Clinical Instructor at KMTC. I’ve reduced hallucination rates by ~25%, designed and refined 100+ complex prompts, and maintained 98%+ accuracy on annotation and labeling—while performing AI safety red-teaming to identify bias, inconsistencies, and safety violations.

Experience

Work history, roles, and key accomplishments

Current

AI Evaluation Specialist

Current

Freelance

Jan 2022 - Present (4 years 5 months)

Evaluate and rate 500+ AI-generated responses weekly across technical and healthcare domains to ensure medical accuracy and alignment with human preference guidelines. Design and refine 100+ prompts to improve output consistency and reduce hallucination rates by ~25%, while maintaining 98%+ accuracy for clinical labeling using project rubrics and AI safety guidelines.

LLM Evaluation Prompt Engineering RLHF And Human Feedback Alignment

Education

Degrees, certifications, and relevant coursework

KCITI College

Certificate in Computer Packages, Computer Packages

2021 -

Activities and societies: MS Office suite (Word/Excel/PowerPoint); file management; digital communication; basic data processing.

Certificate in Computer Packages at KCITI College in 2021, covering MS Office suite proficiency, file management, digital communication, and basic data processing.

Egerton University

Bachelor of Science in Nursing, Nursing

2021 - 2025

Activities and societies: Clinical assessment & evaluation; medical documentation & data integrity; healthcare data privacy & ethics; evidence-based research methodology; critical thinking in high-stakes environments.

Bachelor of Science in Nursing at Egerton University (2021–2025), building clinical assessment and evaluation, medical documentation and data integrity, healthcare data privacy/ethics, and evidence-based research skills in high-stakes settings.